Utility knife blade



FIG. 1 is a front perspective view of the utility knife blade showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof, the right side elevation view being an identical image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a utility knife blade, as shown and described. 